 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
C182 misunderstood ATC clearance and followed the shoreline through the lax TCA rather than follow the shoreline route depicted on the chart. Further, reporter gives no indication he was aware of any altitude assignment.
| Attributes | |
| ACN | 367410 |
| Time | |
| Date | 199704 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lax airport : smo |
| State Reference | CA |
| Altitude | msl bound lower : 3300 msl bound upper : 3300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax tower : smo |
| Operator | general aviation : personal |
| Make Model Name | Skylane 182/RG Turbo Skylane/RG |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | None |
| Aircraft 2 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 10 flight time total : 995 flight time type : 800 |
| ASRS Report | 367410 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Prior to departure we called santa monica ground and said we would like to go south over lax. He gave us instructions through the VFR corridor. After our run-up we called smo tower and said we were ready to go, she gave us instructions that seemed to be clrer at the time. Our instruction was to fly to the 'shoreline' and do a right 280 degree turn, etc. We interpreted her instructions to mean we were to follow the shoreline south past lax. While in the 280 degree turn we asked smo tower for a frequency change to approach. She said to stay with her that it would be better. So we stayed on smo tower frequency until south of hawthorn. Then asked for a frequency change again. Granted. We contacted socal approach and were told of a possible 'airspace violation.' upon reaching san diego we called the controller and were told we were 200 ft too low and too far west. My opinion: the controllers at smo need to be clearer with their departure instructions, especially with people who may not be familiar with the airspace. The clearance should sound the same whether from ground or tower. Since tower asked us to stay with her, why did she not say we were approaching or in the wrong airspace. We should have not accepted and departed with instructions that we were not 100% sure of. We should have studied our charts better.
Original NASA ASRS Text
Title: C182 MISUNDERSTOOD ATC CLRNC AND FOLLOWED THE SHORELINE THROUGH THE LAX TCA RATHER THAN FOLLOW THE SHORELINE RTE DEPICTED ON THE CHART. FURTHER, RPTR GIVES NO INDICATION HE WAS AWARE OF ANY ALT ASSIGNMENT.
Narrative: PRIOR TO DEP WE CALLED SANTA MONICA GND AND SAID WE WOULD LIKE TO GO S OVER LAX. HE GAVE US INSTRUCTIONS THROUGH THE VFR CORRIDOR. AFTER OUR RUN-UP WE CALLED SMO TWR AND SAID WE WERE READY TO GO, SHE GAVE US INSTRUCTIONS THAT SEEMED TO BE CLRER AT THE TIME. OUR INSTRUCTION WAS TO FLY TO THE 'SHORELINE' AND DO A R 280 DEG TURN, ETC. WE INTERPRETED HER INSTRUCTIONS TO MEAN WE WERE TO FOLLOW THE SHORELINE S PAST LAX. WHILE IN THE 280 DEG TURN WE ASKED SMO TWR FOR A FREQ CHANGE TO APCH. SHE SAID TO STAY WITH HER THAT IT WOULD BE BETTER. SO WE STAYED ON SMO TWR FREQ UNTIL S OF HAWTHORN. THEN ASKED FOR A FREQ CHANGE AGAIN. GRANTED. WE CONTACTED SOCAL APCH AND WERE TOLD OF A POSSIBLE 'AIRSPACE VIOLATION.' UPON REACHING SAN DIEGO WE CALLED THE CTLR AND WERE TOLD WE WERE 200 FT TOO LOW AND TOO FAR W. MY OPINION: THE CTLRS AT SMO NEED TO BE CLEARER WITH THEIR DEP INSTRUCTIONS, ESPECIALLY WITH PEOPLE WHO MAY NOT BE FAMILIAR WITH THE AIRSPACE. THE CLRNC SHOULD SOUND THE SAME WHETHER FROM GND OR TWR. SINCE TWR ASKED US TO STAY WITH HER, WHY DID SHE NOT SAY WE WERE APCHING OR IN THE WRONG AIRSPACE. WE SHOULD HAVE NOT ACCEPTED AND DEPARTED WITH INSTRUCTIONS THAT WE WERE NOT 100% SURE OF. WE SHOULD HAVE STUDIED OUR CHARTS BETTER.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.